Glass Rods For Tomorrow. Originally published in the August 1958 issue of Hot Rod magazine. ... A steel strap or large flat washers would provide extra support around bolt holes.

Thus, in Ostwald's “Physico-Chemical Measurements” (English Translation, 1894, p. 66), we read that glass tubing “must be kept lying flat, ... Do Glass Tubes or Rods Bend under their own Weight?